System and Method for Transmitting and Receiving Data in a Communication System

1. A method for transmitting data in a transmitter in a communication system, comprising: classifying data to be transmitted to a receiver according to service types of communication services; inserting a guard interval between the classified data of the service types; encoding the classified data at different coding rates according to the service types and encoding the guard interval at one of the different coding rates; and transmitting the encoded data to the receiver.

2. The method of claim 1 , wherein inserting the guard interval comprises inserting a predetermined number of nulling bits between the classified data.

3. The method of claim 2 , wherein the nulling bits are 0s.

4. The method of claim 1 , wherein the service type includes at least one of Unsolicited Granted Service (UGS) type, real time Polling Service (rtPS) type, non-real-time Polling Service (nrtPS) type, and Best Effort Service (BES) types.

5. A method for receiving data in a receiver in a communication system, comprising: receiving from a transmitter data including a guard interval inserted between the data classified according to different service types; decoding the classified data at different decoding rates according to the service types and decoding the guard interval at one of the different decoding rates; and eliminating the guard interval from the decoded data.

6. The method of claim 5 , wherein eliminating the guard interval comprises eliminating a predetermined number of nulling bits.

7. The method of claim 5 , wherein the service type includes at least one of Unsolicited Granted Service (UGS) type, real time Polling Service (rtPS) type, non-real-time Polling Service (nrtPS) type, and Best Effort Service (BES) types.

8. A system for transmitting and receiving data in a communication system, comprising: a transmitter for classifying data to be transmitted to a receiver according to service types of communication services, inserting a guard interval between the classified data encoding the classified data at different coding rates according to the service types, encoding the guard interval at one of the different coding rates, and transmitting encoded the data to the receiver; and the receiver for receiving the encoded data from the transmitter, decoding the classified data at different decoding rates according to the service types, decoding the guard interval at one of the different decoding rates, and eliminating the guard interval from the decoded data.

9. The system of claim 8 , wherein the transmitter inserts a predetermined number of nulling bits between the classified data.

10. The system of claim 9 , wherein the nulling bits are 0s.

11. The system of claim 8 , wherein the transmitter classifies the data according to the service type classes of the communication services.

12. The system of claim 8 , wherein the receiver eliminates a predetermined number of nulling bits.